<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[Hz_enginer的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/Hz_enginer</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; Hz_enginer]]></copyright><item><title><![CDATA[Oracle 索引命中详解]]></title><link>https://blog.youkuaiyun.com/Hz_enginer/article/details/93201640</link><guid>https://blog.youkuaiyun.com/Hz_enginer/article/details/93201640</guid><author>Hz_enginer</author><pubDate>Fri, 21 Jun 2019 16:27:51 +0800</pubDate><description><![CDATA[整理一下Oracle数据查询索引命中情况，仅供参考，有问题欢迎指出修正：

创建测试表：

CREATE TABLE TEST_HZ
(
 A VARCHAR(20),
 B VARCHAR(20),
 C VARCHAR(20)
)；

插入数据： 本人比较懒，然后就直接建序列插数据

create sequence seq_test_hz_a

start with 1

inc...]]></description><category></category></item></channel></rss>